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  1. JDK
  2. JDK-8058847

C2: EliminateAutoBox regression after 8042786

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Details

    • Bug
    • Resolution: Fixed
    • P2
    • 9
    • 8u40, 9
    • hotspot
    • b15
    • 9
    • b40
    • x86_64
    • Verified

    Backports

      Description

        Originally reported at http://stackoverflow.com/questions/25942010/how-is-arrayoutofboundsexception-possible-in-string-valueofint

        The following test case crashes JVM when it should normally runs forever.

        public class EliminateAutoBoxCrash {
            private static final int[] values = new int[256];

            public static void main(String[] args) {
                byte[] bytes = new byte[] {-1};
                while (true) {
                    for (Byte b : bytes) {
                        values[b & 0xff]++;
                    }
                }
            }
        }

        Note autoboxing: Byte b.
        Workaround: -XX:-EliminateAutoBox

        Initial investigation shows that the bug has been introduced with the fix for JDK-8042786.

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8067524 C2: EliminateAutoBox regression after 8042786

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8070912 C2: EliminateAutoBox regression after 8042786

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8083453 C2: EliminateAutoBox regression after 8042786

            • P2 - Crashes, loss of data, severe memory leak.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8066027 C2: EliminateAutoBox regression after 8042786

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed
            duplicates

            Bug - A problem which impairs or prevents the functions of the product. JDK-8071865 Byte.valueOf() cause bitwise operators got wrong result

            • P3 - Major loss of function.
            • Closed
            relates to

            Bug - A problem which impairs or prevents the functions of the product. JDK-8062742 compiler/EliminateAutoBox/UnsignedLoads.java fails with client vm

            • P1 - Blocks development and/or testing work, production could not run.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-8042786 Proper fix for 8032566

            • P3 - Major loss of function.
            • Resolved

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                vlivanov Vladimir Ivanov
                apangin Andrei Pangin
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                Dates

                  Created:
                  Updated:
                  Resolved: